well if you make bad moves you most certainly lose.
so have a look at the games where you felt you didnt make wrong moves first and find out which moves actually made you lose.
try to figure out wrong moves in every game (also the ones you won) and figure out better moves you shouldve made.
this doesnt only help to improve your game but also finding your opponents mistake during a game which will therefore help you to win.
and ... dont stop playing. try to improve instead. fnding that you have improved makes a way better feeling than finding out you gave in.
I used to be able to win decently here and there, but it seems like I haven't been able to get a good win in on a rated game for the past month. I'm getting really discouraged and starting to feel like I'm dumb or something...
Should I just stop playing? =/